15.2.2.2 Context-dependent searches using menu commands

Edit > Search Files...

Opens a Search Files tool in for a
Plain Directory
or
Root and Patterns
search, using the directory associated with the current tool (in particular, the directory of the buffer displayed in an Editor tool).

If an existing Search Files tool is reused by this command and was last doing a
Root and Patterns
search, then the directory is placed in the
Root Directory
box. Otherwise, the directory is placed in the
Filename Patterns
box for a
Plain Directory
search with the default pattern added to the end (see Search Parameters).

Works > Systems > Search Files...

Prompts for a regexp and performs a
System Search
in the currently selected system.